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What foods should I avoid if I have high calcium?

4 min read

According to the Merck Manuals, hypercalcemia, or high blood calcium, can result from various conditions including parathyroid problems, excessive vitamin D intake, and certain cancers. When managing this condition, understanding what foods should I avoid if I have high calcium is a critical first step towards a healthier dietary plan.

Quick Summary

This article details specific dietary changes for managing high calcium levels, outlining foods to limit or avoid, including certain dairy products, fortified items, and high-sodium foods, along with the reasons behind these recommendations and other important lifestyle tips.

Key Points

  • Restrict Dairy and Fortified Products: Reduce or avoid items like milk, cheese, yogurt, and fortified cereals, juices, and milks that are high in calcium.

  • Limit High-Sodium Foods: Excess salt intake increases urinary calcium, raising the risk of kidney stones; minimize processed and fast foods.

  • Check Supplements and Antacids: Do not take calcium or vitamin D supplements without a doctor’s guidance, and check antacids for calcium content.

  • Stay Well Hydrated: Drinking plenty of water helps the kidneys flush out excess calcium and reduces the risk of kidney stone formation.

  • Manage Animal Protein and Oxalate-Rich Foods: Maintain moderate animal protein intake and, if concerned about calcium-oxalate stones, pair moderate oxalate foods with calcium-containing meals.

  • Consult a Professional: Always work with a healthcare provider for a personalized plan, as the specific dietary needs for hypercalcemia can vary based on the underlying cause.

In This Article

A diagnosis of hypercalcemia, or high calcium levels in the blood, often necessitates careful dietary management to help reduce the body's overall calcium load. While a healthcare provider must confirm the specific treatment plan, adjusting your diet is a key component of managing this condition and preventing serious complications like kidney stones. The following guide outlines the major food groups and specific items to monitor or avoid.

Dairy and Calcium-Fortified Foods

Many people immediately think of dairy when they consider high-calcium diets. When you have hypercalcemia, it is often necessary to reduce or even temporarily eliminate your intake of traditional dairy products and those fortified with extra calcium.

  • Milk, Cheese, and Yogurt: Standard dairy products are a well-known source of calcium. Your doctor may advise limiting or cutting these out, depending on the severity of your condition.
  • Fortified Products: Be extremely vigilant about reading food labels. Many orange juices, soy and almond milks, and breakfast cereals have calcium added to them. Shake fortified beverages before use, as the calcium can settle at the bottom.
  • Certain Yogurts and Ice Cream: These items can be very high in calcium and should be limited or avoided altogether based on medical advice.

Other Calcium-Rich Items to Limit

Beyond dairy, several other food items contain significant amounts of calcium that can contribute to high levels in the blood, especially when consumed regularly or in large quantities.

  • Canned Fish with Bones: Canned sardines and salmon, where the bones are soft and edible, are a concentrated source of calcium and should be restricted.
  • High-Calcium Vegetables: While generally healthy, certain leafy greens like kale and bok choy contain notable amounts of calcium. However, they are less of a concern than dairy unless consumed excessively.

High-Sodium Foods and Their Effects

High sodium intake is a major concern for those with hypercalcemia, particularly for preventing kidney stones. When you consume a lot of salt, your body flushes out more calcium through your urine, which can lead to stone formation.

  • Processed and Packaged Foods: Many canned goods, ready-to-eat meals, and fast food items are loaded with hidden sodium.
  • Salty Snacks and Condiments: Pretzels, chips, and high-sodium condiments like soy sauce should be limited.
  • Restaurant Meals: A significant portion of daily sodium intake often comes from restaurant and takeout food. Be mindful when dining out.

Foods Containing Oxalates and Phosphates

Some compounds in food can interfere with calcium metabolism, and it's helpful to be aware of their impact. However, it is important to note that for individuals with hypercalcemia, a low-calcium diet is the primary focus, not necessarily a low-oxalate diet like that followed by some kidney stone formers. In fact, pairing moderate oxalate foods with dietary calcium can prevent stone formation. However, reducing intake of foods high in phosphates is crucial.

  • Oxalate-Rich Foods: These include spinach, rhubarb, beets, and sweet potatoes. While these foods contain compounds that can bind with calcium in the gut, a moderate, paired approach is often recommended for stone prevention rather than complete avoidance.
  • Phosphate-Rich Processed Foods: Phosphates are high in certain processed foods and carbonated drinks, which can negatively affect calcium levels. Limiting items with high phosphate food additives is advisable.

Comparison of High-Calcium vs. Low-Calcium Foods

This table helps visualize the difference between foods to avoid and safer alternatives.

Food Category To Avoid/Limit (High Calcium) Safer Alternatives (Lower Calcium)
Dairy Milk, cheddar cheese, full-fat yogurt, ice cream Non-dairy milks (oat, rice, unsweetened almond), soy-based products (check labels), sorbet
Protein Canned salmon with bones, sardines with bones Skinless chicken, eggs, beans, plant-based protein sources like legumes
Vegetables Excessive kale, bok choy (if recommended), spinach Low-calcium vegetables like carrots, bell peppers, eggplant
Beverages Calcium-fortified orange juice, fortified milk substitutes Water, herbal tea, fresh juices (not fortified)
Processed Items Fortified cereals, calcium-rich antacids Unfortified cereals, non-calcium antacids (consult a doctor)

Lifestyle and Other Considerations

Managing hypercalcemia involves more than just controlling food intake. Your lifestyle choices also play a significant role.

Hydration

Staying properly hydrated is paramount. Drinking plenty of fluids, particularly water, helps the kidneys flush out excess calcium and can prevent the formation of kidney stones. A healthcare provider can recommend a specific daily fluid intake goal.

Supplements and Medications

Never take calcium or vitamin D supplements without a doctor's explicit instruction. Excessive supplementation of either can lead to high blood calcium levels. If you are taking any medications, including antacids, check with your healthcare provider to ensure they do not contain calcium.

Alcohol and Caffeine

High consumption of alcohol and caffeine can affect calcium metabolism and may decrease absorption or increase excretion. Moderation is advised.

Protein Intake

Excessive animal protein can sometimes lead to an increase in urinary calcium excretion. Maintaining a moderate, balanced protein intake is a good strategy.

Conclusion

For individuals with high calcium, navigating dietary choices is a critical step towards better health and preventing complications. The focus should be on reducing the intake of highly concentrated calcium sources like certain dairy and fortified foods, as well as minimizing high-sodium processed items. Coupled with adequate hydration and attention to supplements, these dietary modifications can significantly help manage your condition. Always consult with a healthcare professional for a personalized plan, as your specific needs may vary. For more information, refer to reputable sources like the National Institutes of Health. [https://ods.od.nih.gov/factsheets/Calcium-HealthProfessional/]

Frequently Asked Questions

The primary food group to avoid or significantly reduce is dairy, including milk, cheese, and yogurt, as it is a major source of dietary calcium.

Yes, many foods and drinks like orange juice, cereal, and plant-based milks are fortified with extra calcium, making them problematic. Always check labels for added calcium.

High sodium intake can cause your body to excrete more calcium through urine, increasing the risk of kidney stones. Limiting processed and salty foods is important.

No, you don't need to avoid all vegetables. While some leafy greens like kale and spinach contain calcium, they are not typically a primary concern unless consumed excessively. The bigger risk comes from dairy and fortified foods.

No, you should not take calcium or vitamin D supplements unless a doctor specifically advises it. Excessive amounts of either can worsen hypercalcemia.

Yes, drinking plenty of water is crucial. It helps dilute urine and allows the kidneys to flush out excess calcium, which can prevent the formation of kidney stones.

High animal protein intake can increase the amount of calcium released in the urine. It's best to consume a moderate, balanced amount of animal protein.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.